baber/WOPTO huggingface dataset:
Patent CA-2020226-C (CA)
Title: Thermochemical ice melting
Inventor: GAMMON PETER HENRY FIRTH
IPC: C09K3/18
Filed: 1990-06-29
Granted: 1999-11-30
Abstract: A method is described for melting ice, e.g. for penetrating ice, snow, frozen soils arid other low melting solid materials where frozen water is a principal constituent.      It comprises directly contacting the material to be melted with a melting agent comprising at least one compound selected from the hydroxides, monoxides, methoxides and amides of the alkali metals, lithium, sodium, potassium, rubidium and cesium. Mixtures of at least two of these compounds are preferably used to form ice melting compositions of specific characteristics.
Patent CA-2024247-C (CA)
Title: Measurement of performance of an extended finite state machine
Inventor: KRISHNAKUMAR ANJUR
IPC: G06F17/50
Filed: 1990-08-29
Granted: 1994-02-01
Abstract: MEASURMENT OF PERFORMANCE OF AN  EXTENDED FINITE STATE MACHINE Abstract A method and apparatus is disclosed for determining an objective measure of performance of an extended finite state machine. Many modern complex systems, for example, computer communications protocols and computer or machine user interfaces, can be represented as extended finite state machines. A formal description. of the extended finite state machine is employed to obtain a canonical form description. The canonical form description, combined with a service description, is used to generate a list of canonical state transitions transited by the extended finite state machine to perform the service. From this list, an objective measurement of performance, e.g., the time required to perform a particular service, is obtained. This objective measurement may then be used as desired, for example, to select an optimum extended finite state machine from a plurality of extended finite state machines.
Patent CA-2025463-C (CA)
Title: Solid surface cleaning apparatus and method using a short impulse laser beam for used on the surface to be cleaned
Inventor: BERGER HUBERT
IPC: B23K26/14
Filed: 1990-01-17
Granted: 2000-03-21
Abstract: The present invention relates to a method for cleaning the surface of materials such as particularly stone, glass, steel, ceramics, wood, paper or cardboard, of the type implementing a laser beam (9) which is focused to the surface to be cleaned, characterized in that the ''peak power'' of the laser used to this effect is adjusted to a value comprised between a few hundred of kilowatts and a few tens of megawatts, the diameter of the laser beam (9) on the surface to be cleaned being selected so as to obtain on this surface a ''peak power'' density comprised between a few tenths of megawatts per cm<2> and a few tens of megawatts per cm<2>. The field of the invention is particularly restauration of art works, whether it be historical monuments, wooden furniture, glass works or pottery, and also the field of cleaning tubes during their manufacture or subsequent descaling
Patent CA-2034079-C (CA)
Title: Water heater construction and sealing device therefor
Inventor: NELSON THOMAS E
IPC: F24H1/18
Filed: 1991-01-11
Granted: 1995-02-07
Abstract: A water heater construction (10) including an inner tank (12) for containing water surrounded in spaced apart relationship by an outer shell (14).  An outer collar (22) of insulation material is located in the annular space (16) between the inner tank (12) and outer shell (14) at a preselected location within the annular space (16) along the height of the water heater construction (10).  The collar (22) has a radial thickness greater than the radial width of the annular space (16) and is radially compressed between the interior wall of the outer shell (14) and exterior wall of the inner tank (12).  An expandable foam thermal insulation material (30) fills the annular space (16) above the collar (22).  A method of making the water heater construction (10) includes the steps of positioning the collar (22) of insulation material around and in contact with the interior wall surface of the outer shell (14) and moving the outer shell (14) downwardly concentrically over the inner tank (12) displacing the inner perimeter margin of the collar (22) at the interface of the collar (22) and the water tank (12) in a generally upward direction to form a trough in the collar (22) at the top side of the collar (22).
Patent CA-2036823-C (CA)
Title: Method of coating ceramic honeycomb members with finely-divided solids
Inventor: SCHMIDT FELIX
IPC: B22F3/26
Filed: 1991-02-21
Granted: 1999-05-25
Abstract: A method for uniformly coating a ceramic or metal honeycomb member with a quantity of solid from an aqueous coating dispersion, the quantity, at a given constant density of coating dispersion, being below the quantity which would be deposited at equilibrium between the honeycomb member and the coating dispersion.  The honeycomb member is inserted into a vertical similarly-shaped immersion chamber having at least one inflatable seal.  The immersion chamber is sealed and the coating dispersion is pumped into the honeycomb member from below within a charging time of less than 10 seconds and until charging is complete.  The dispersion is pumped out after a holding time and within a pumping-out time, and, after breaking the seal or seals, the honeycomb member is taken out of the immersion chamber and freed of excess coating dispersion by blowing out or by suction.
Patent CA-2045273-C (CA)
Inventor: LEE I-HWA
IPC: C09J123/26
Filed: 1991-06-21
Granted: 2002-07-09
Abstract: An extrudable bonding resin composition of (a) 65 to 99 percent of an ethylene copolymer portion of a copolymer of ethylene and 20 to 50 percent comonomer of acids, esters, and the like, and grafted sidechains of comonomer units selected from carboxylic acid, anhydride, salt, or half ester functionality, and optionally a compatible non-grafted ethylene copolymer, and (b) 1 to 35 percent by weight of a tackifying resin exhibits good adhesion properties without the need for a primer.
Patent CA-2047263-C (CA)
Title: Disposable safety syringe
Inventor: RIGHI NARDINO
IPC: A61M5/32
Filed: 1991-07-17
Granted: 1994-10-18
Abstract: A disposable safety syringe which comprises a barrel (1),  an  injection needle  (4)  fitted on the fore end of barrel (1), a plunger (6) being slidable in barrel (1) from a syringe-filling utmost retracted position to a syringe-emptying forwardmost position, and which is fitted with a manually drivable stem (7) protruding from the rear end of barrel (1), a longitudinally slidable protective sleeve (12) slidably fitted on the outside of barrel (1), so as to be movable from a retracted rest position in which the needle (4) is exposed, into an advanced safety position in which the protective sleeve (12) extends around the needle (4), so as to entirely cover the same, and with locking means (23, 25)  for automatically retaining in a not retractil manner the protective sleeve (12) to the barrel (1) in its advanced safety position
Patent CA-2049888-C (CA)
Inventor: EL-HAJ ALI
IPC: H01R24/58
Filed: 1991-08-26
Granted: 2001-06-12
Abstract: An electrical power outlet assembly having a socket formed by a one-piece, deep-drawn metal cup with an inte-gral out-turned flange at its mouth, the cup having at its bottom a transverse end wall that is lanced to form a diametric, spade-like terminal piece. One end of the terminal piece is integral with the metal cup, and the other end is free and clear. The terminal piece is bent outward to form an outstanding spade connector. An insu-lacing terminal block is carried in the metal cup, and has a through passage extending from its front to its rear. An electrically conductive terminal is carried by the block and extends completely through the passage.      The terminal has a forward contact portion adjacent the front of the block, and a rear terminal portion extend-ing from the rear thereof. The advantage of the present invention is that an especially simple and inexpensive, one-piece socket construction is realizeable by virtue of the integrally formed terminal piece that is stamped from the bottom wall of the metal cup.
Patent CA-2051524-C (CA)
Title: Furniture comprising laminated slats and methods of manufacturing such furniture
Inventor: GEHRY FRANK O
IPC: A47C5/14
Filed: 1991-09-17
Granted: 2000-01-25
Abstract: Furniture comprises a strong, aesthetically appealing, woven lattice of interlocking slats. The slats are made of wood laminate having indentations allowing fitting of the slats across one another so as to form the lattice.     Advantageously, furniture according to the present invention may be manufactured of a single type of material, that of the bent wood laminate slats. No other supporting structural material is needed to make the furniture simultaneously possess the advantages of being sturdy, aesthetically appealing, economical to manufacture, and light in structure and appearance. The invention also provides methods of manufacturing such furniture.
Patent CA-2053604-C (CA)
Title: Improved method for the purification of acetaminophen
Inventor: FRUCHEY OLAN STANLEY
IPC: C07C231/24
Filed: 1991-10-17
Granted: 2003-03-25
Abstract: A method is provided for purifying a crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a hot aqueous solution of the crude APAP; and b) subsequently contacting the hot solution with an acid washed adsorbent carbon, e.g., an activated carbon, which acid washed carbon, prior to such contact, has been pretreated by contacting it with an aqueous solution of a reducing sulfite.
Patent CA-2059705-C (CA)
Title: Rear window stop lamp for motor vehicles
Inventor: SASAJIMA TETSUO
IPC: F21V17/10
Filed: 1992-01-20
Granted: 2001-11-06
Abstract: A rear window stop lamp for a motor vehicle, which is energizable when the brake of the motor vehicle is applied, has a resin-molded body attached to the interior side of a rear window glass sheet. The resin-molded body has at least one cavity having a curved reflecting surface.      An LED chip is disposed in the cavity substantially at a focal point of the curved reflecting surface. A transparent resin-molded body surrounds the LED chip. A light distribution lens plate covers an opening of the cavity for directing rearwardly a light beam emitted from the LED chip and reflected by the curved reflecting surfaces. The light distribution lens plate comprises a Fresnel lens. A printed electric wire board is embedded in the resin-molded body for energizing LED units. The printed electric wire board is made of a material having a coefficient of thermal expansion which is closer to that of the rear window glass sheet than to that of the resin-molded body. A thermal expansion inhibiting plate, also embedded in the resin-molded body, is made of a material having a coefficient of thermal expansion which is closer to that of the rear window glass sheet than to that of the resin-molded body.
Patent CA-2060059-C (CA)
Inventor: SLAPSYS MICHAEL
IPC: F16B17/00
Filed: 1992-01-27
Granted: 1995-04-25
Abstract: A clip provides a method for securing suspended ceiling tees to each other at an angle, especially but not necessarily at an angle other than a right angle.   The clip has a body portion, an integral first tab portion projecting from one end of the body portion, an integral second tab portion projecting from the other end of the body portion,  and preferably two integral tongue portions projecting from the body portion along either side of the second tab portion.   The connection is effected by cutting the end of the first tee to the desired angle,  if it is not already at that angle, then punching a vertical slot in the web portion of the first tee at a specified distance from the cut end of the first tee, then inserting the first tab in that slot and folding it and the clip against the web portion, then folding the tongue portions around the end of the tee to secure the clip to the tee,  then inserting and securing the second tab portion in a vertical slot punched in the web portion of the second tee at the desired connection location.          The clip preferably has a hole therethrough in the area of the first tab portion, and a slot through the second tab portion, thereby weakening those areas to facilitate bending.
Patent CA-2062194-C (CA)
Title: Self-crosslinkable resin
Inventor: YUKAWA YOSHIYUKI
IPC: C09J175/00
Filed: 1992-03-03
Granted: 1997-01-28
Abstract: A self-crosslinkable resin prepared by (1) reacting a hydroxy-containing vinyl monomer with some isocyanate groups on the skeleton of a vinyl polymer having at least two isocyanate groups in the molecule to introduce a polymerizable double bond into the polymer, subsequently completely blocking the isocyanate group(s) remaining on the polymer skeleton with a blocking agent, and thereafter polymerizing an unsaturated monomer component consisting essentially of a hydroxyl-containing vinyl monomer with the polymerizable double bond introduced; or (2) blocking some isocyanate groups on the polymer skeleton with a blocking agent, subsequently reacting a hydroxyl-containing vinyl monomer with the isocyanate group(s) remaining on the polymer skeleton to introduce a polymerizable double bond into the polymer, and thereafter polymerizing an unsaturated monomer component consisting essentially of a hydroxyl-containing vinyl monomer with the polymerizable double bond introduced.
Patent CA-2062293-C (CA)
Title: Oxidative hair dyeing process with catalytic pretreatment
Inventor: WENKE GOTTFRIED
IPC: A61Q5/10
Filed: 1992-03-04
Granted: 2002-02-26
Abstract: In a method for oxidatively dyeing hair, a pretreatment which comprises contacting hair with an aqueous solution of an effective amount of particular metal/chelate complexes followed by treatment with oxidative dye mixtures is disclosed. The process serves to conform the oxidative dyeing rate of virgin hair to that of the normally noncongruent rate of nonvirgin hair, so as to enhance the efficiency of thw oxidative dyeing process, without reducing the intensity or variety of color available.
Patent CA-2062416-C (CA)
Title: Ink jet recording head and method for preserving same
Inventor: OHKUMA NORIO
IPC: B41J2/165
Filed: 1992-03-06
Granted: 1997-12-30
Abstract: A recording head comprises an ink container, an energy generating device for discharging ink from the ink container, an ink discharge section corresponding to the energy generating device and a covering member that covers the ink discharge section and an atmosphere-communicating opening for the ink container, wherein when the recording head is out of recording, a small opening communicating with the atmosphere-communicating opening, or a valve member capable of opening or closing in accordance with an internal pressure change, or an internal pressure change-absorbing member capable of absorbing an internal pressure change by changing its volume is provided on said covering member at a position corresponding to the atmosphere-communicating opening.
Patent CA-2062544-C (CA)
Title: Antenna mounting structure with a tiltable bracket
Inventor: PATTISON JAY
IPC: H01Q1/12
Filed: 1992-03-09
Granted: 1997-09-23
Abstract: A bracket for securing an antenna to a support structure, comprising a first plate member, a second plate member, a pivot for connecting the second plate member to the first plate member, U-bolts for mounting the first plate member to the support structure adjacent the pivot, and further means for attaching the antenna to the second plate member adjacent the pivot, whereby the antenna may be tilted upwardly and downwardly relative to the support structure.
Patent CA-2063550-C (CA)
Title: Azomethines agonist compounds of the histamine h3 receptor for therapeutic use, pharmaceutical compositions acting as agonists of said receptor and method of preparation
Inventor: GARBARG MONIQUE
IPC: C07D233/54
Filed: 1991-05-10
Granted: 2002-02-26
Abstract: The compounds having the formula: (see formula I) wherein R5, R6, R7 and R8 each denote hydrogen or methyl, R5 and R6 taken together form methylene and R5, R6, R7 and R8 do not simultaneously denote hydrogen, R2 is phenyl or imidazolyl, unsubstituted, monosubstituted or polysubstituted with R4, and R2 is unattached to R3 or is attached to R3, R3 is H, or has the meaning of R2 or R4, and R4 is H, OR3, COOR3, halogen, CF3 or unsubstituted, monosubstituted or polysubstituted alkyl, or a pharmaceutically acceptable salt thereof. The compounds are derived from an R-NH2 amine with a strong affinity for the histamine H3-receptor and to the primary amine function of which is bonded a group forming a bond which can hydrolyze slowly in a neutral medium. The pharmaceutical compositions consist of these compounds and a pharmaceutically acceptable excipient.      The compounds are used to produce a drug inhibiting histamine synthesis and release, and having, in particular, sedative, sleep regulating, anti-convulsive, anti-depressive, anti-allergic, anti-inflammatory, anti-secretory or anti-ulcerous effects.
Patent CA-2065827-C (CA)
Title: Multiple color staining reagent and method of analysis
Inventor: RAO PATRICIA E
IPC: G01N33/53
Filed: 1992-04-10
Granted: 1997-07-22
Abstract: A multiple color staining reagent and method for blood cell analysis, especially through the use of flow cytometry,  comprising two or more selected monoclonal antibodies coupled with a fluorescent label, particularly FITC and phycoerythrin, and an unlabeled, non-specific IgG antibody  are  provided.    Specifically  described  is  a multiple color staining reagent comprising a combination of two or more mouse monoclonal antibodies, each labeled with  a  different  fluorescent  dye,  useful  in  double staining assays and the like for blood cell analysis.
Patent CA-2079003-C (CA)
Inventor: VON LERSNER WOLF A
IPC: A61L2/24
Filed: 1992-01-24
Granted: 1999-03-16
Abstract: Procédé sans danger, pratique et moins coûteux permettant l'élimination de déchets infectieux de soins personnels ainsi que de déchets pathologiques, et équipement pouvant être configuré pour une utilisation de type municipal à grande échelle employant des techniques de traitements continus, ou pour des processeurs autonomes plus petits, du type traitant des lots sur des sites individuels tels que des hôpitaux.
Patent CA-2080677-C (CA)
Title: Continuous treatment of small chips
Inventor: HENRICSON KAJ
IPC: D21C3/26
Filed: 1992-10-15
Granted: 1996-08-27
Abstract: Paper pulp is produced from small chips (e.g. having a smallest dimension of between about 1 and 5 mm), which may be more easily penetrated by the treatment liquids resulting in a more uniform Kappa distribution which makes it possible to cook to lower Kappa numbers without losing strength.  The chips are steamed and then impregnated with sulfur containing liquor in an impregnation vessel having a conveyor. The conveyor, such as an endless belt with baffles, moves the chips through the liquor rather than trying to circulate the liquor.  From the impregnation vessel the chips move to the top of an upright digester where they are steamed, and then are subjected to digesting conditions, entrained in white liquor, in the digester and discharged from the bottom.  The digester has smooth side walls, devoid of screens and circulation loops.  At the bottom of the digester the chips -- at a consistency of about 10 to 20% -- are diluted to a consistency of about 6 to 10% and then passed, with a feeding a mechanism, to a first pressure diffuser.  From the first pressure diffuser the chips pass through a flow control valve to a hot alkali extraction tank, and then to a second pressure diffuser.
Patent CA-2083558-C (CA)
Title: Wind direction responsive and height adjustable goose decoy
Inventor: TILEY GAREN R
IPC: A01M31/06
Filed: 1992-11-23
Granted: 1997-03-11
Abstract: A decoy is provided including a shape retentive head and neck structure supporting a cylindrical body at its lower end downwardly from which a first support shank extends.  The support shank extends downwardly through upper and lower portions of the open front end of a horizontally elongated hollow and flexible water fowl simulating body portion closed at its rear end.  A sleeve is disposed within the front end of the body portion about the cylindrical body and is upwardly displaced thereover for clamping an annular portion of the flexible body portion between the external surfaces of the cylindrical body and the internal surfaces of the sleeve.  The lower end of the shank is rotatably supported and vertically adjustable relative to the upper end portion of a ground support shank including a lower end adapted to penetrate the ground.
Patent CA-2086372-C (CA)
Title: Procede d'obtention d'amines tertiaires methylees par reaction d'hexamethylenetetramine avec les amines ou les nitriles
Inventor: FOUQUAY STEPHANE
IPC: C07C215/12
Filed: 1992-12-29
Granted: 2004-02-24
Abstract: L'invention concerne un procédé pour l'obtention d'amines tertiaires méthylées qui consiste à faire réagir l'hexaméthylènetétramine sur divers précurseurs azotés en présence d'hydrogène et d'uncatalyseur d'hydrogénation. La réaction est très sélective, la méthylation portant uniquement sur les azotes amines et nitriles. Selon l'invention, on obtient très aisément les amines méthylées correspondant à des dérivés initiaux aussi divers que les mono ou polyamines grasses, les aminoalcools, les êtheramines, les nitriles, les aminonitriles, etc...
Patent CA-2086861-C (CA)
Title: Radiant heater having multiple heating zones
Inventor: HIGGINS GEORGE ANTHONY
IPC: F24C7/04
Filed: 1993-01-07
Granted: 2002-04-16
Abstract: In a radiant heater having multiple heating zones there is provided a first heating zone incorporating at least one heating element and a second heating zone incorporating at least first and second heating elements. A thermal cut-out device includes a temperature sensor which passes through at least the first heating zone and which is responsive solely to heat emitted in the first heating zone. A manually operable switch permits switching between first and second heating states. In the first heating state, the at least one heating element in the first heating zone is energised alone, while in the second heating state the at least one heating element in the first heating zone is electrically connected in series with the second heating element of the second heating zone, the at least one heating element and the second heating element being energised in parallel with the first heating element of the second heating zone.
Patent CA-2087873-C (CA)
Inventor: HUTCHISON RONALD ALLEN
IPC: F16H61/28
Filed: 1993-01-22
Granted: 1996-03-19
Abstract: Shift control system (300)/method for a splitter type auxiliary section (14/102) is provided which includes control members (328) to prevent auxiliary section synchronized clutch (92, 136) damage if the master clutch (C) is engaged during an auxiliary section shift.  Upon sensing master clutch engagement during a shift into the auxiliary section high-speed ratio, the force used to engage the high speed ratio is reduced from a first (p*a224) to a considerably lower second (p*(a224-a222)) level.